Sell Male Fern - Dryopteris filix mas -

Male Fern  - Dryopteris filix mas - You May Also Be Interested In: dryopteris filix mas fern tannin
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By extraction with ether, Male Fern yields a dark green, oily liquid extract, Oil of Male Fern, containing the more important constituents of the drug. The chief constituents are about 5 per cent of Filmaron - an amorphous acid, and from 5 to 8 per cent of Filicic acid, which is also amorphous and tends to degenerate into its inactive crystalline anhydride, Filicin. The Filicic acid is regarded as the chief, though not the only active principle. Tannin, resin, colouring matter and sugar are also present in the rhizome. The drug has a disagreeable, bitter taste and an unpleasant odour